Home / 72,786.72-100,456.56-68,283.84

Finding the Fourth Proportional to 72,786.72, 100,456.56 and 68,283.84

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Solution

The fourth proportional to 72,786.72, 100,456.56 and 68,283.84 is: 94,241.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,786.72 : 100,456.56 = 68,283.84 : x
  2. Step 2: Convert to fraction form
    72,786.72/100,456.56 = 68,283.84/x
  3. Step 3: Cross multiply
    72,786.72x = 100,456.56 × 68,283.84
  4. Step 4: Simplify right side
    72,786.72x = 6,859,559,669.99
  5. Step 5: Solve for x
    x = 6,859,559,669.99/72,786.72
  6. Step 6: Final answer
    x = 94,241.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.